diff --git a/pkgs/applications/misc/k2pdfopt/default.nix b/pkgs/applications/misc/k2pdfopt/default.nix
index 03ed7554af5f..015ef8760648 100644
--- a/pkgs/applications/misc/k2pdfopt/default.nix
+++ b/pkgs/applications/misc/k2pdfopt/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
 
         (fetchpatch {
           name = "mupdf-1.10a-shared_libs-1.patch";
-          url = "http://www.linuxfromscratch.org/patches/downloads/mupdf/mupdf-1.10a-shared_libs-1.patch";
+          url = "https://ftp.osuosl.org/pub/blfs/conglomeration/mupdf/mupdf-1.10a-shared_libs-1.patch";
           sha256 = "0kg4vahp7hlyyj5hl18brk8s8xcbqrx19pqjzkfq6ha8mqa3k4ab";
         })
       ];
diff --git a/pkgs/applications/misc/mupdf/default.nix b/pkgs/applications/misc/mupdf/default.nix
index 5651405633fb..61febf5a7ff0 100644
--- a/pkgs/applications/misc/mupdf/default.nix
+++ b/pkgs/applications/misc/mupdf/default.nix
@@ -29,7 +29,7 @@ stdenv.mkDerivation rec {
 
     (fetchpatch {
       name = "mupdf-1.11-shared_libs-1.patch";
-      url = "http://www.linuxfromscratch.org/patches/downloads/mupdf/mupdf-1.11-shared_libs-1.patch";
+      url = "https://ftp.osuosl.org/pub/blfs/conglomeration/mupdf/mupdf-1.11-shared_libs-1.patch";
       sha256 = "127x8jhyj3i9cn3mxw9mm5barw2yk43rvmghg54bhn4rjalx857j";
     })
   ];